incomplete pointcloud autoclassifying and reset to unclassified issue

sky111

Hello, I have the follwing two issues with GM Pro 26.2

A) when autoclassifying a pointcloud to ground there are parts that are not processed.

B) when autoclassifying a pointcloud to ground and the 'reset existing points to unclassified at start' checked i get different results in two consecutive runs with the identical settings.

Anyone have the same issues and some hint how to solve ?

System: 128 GB RAM, a bunch of cores, RTX4070, Win10 pro.

Thanks a lot